NZART Amateur Examination &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp &nbsp page 4&nbsp &nbsp &nbsp &nbsp &nbsp NZARTX07 Security code 267036
<ol start = 22>
<br>

<li>  The unit of inductance is the: 

<ol type = a>

<li> farad 

<li> henry 

<li> ohm 

<li> reactance 


</ol>
<br>

<li>  The correct colour coding for the neutral wire in a flexible 
mains lead 
is: 

<ol type = a>

<li> brown 

<li> blue 

<li> yellow and green 

<li> white 


</ol>
<br>

<li>  The following material is considered to be a 
semiconductor: 

<ol type = a>

<li> copper 

<li> sulphur 

<li> silicon 

<li> tantalum 


</ol>
<br>

<li>  A transistor can be destroyed in a circuit by: 

<ol type = a>

<li> excessive light 

<li> excessive heat 

<li> saturation 

<li> cut-off 


</ol>
<br>

<li>  <img src = "npn.gif" align = right width = 177 height = 
90> 
<extralines = 1 totallines = 6 >
In the figure shown, 3 represents the: 

<ol type = a>

<li> drain of a junction FET 

<li> collector of an npn transistor

<li> emitter of a pnp transistor 

<li> base of an npn transistor 


</ol>
<br>

<li>  An ammeter should not be connected directly across the 
terminals of a 12 
volt car battery because: 

<ol type = a>

<li> the resulting high current will probably destroy the 
ammeter 

<li> no current will flow because no other components are in 
the circuit 

<li> the battery voltage will be too low for a measurable 
current to flow 

<li> the battery voltage will be too high for a measurable 
current to flow 


</ol>
<br>

<li>  The input to an amplifier is 1 volt rms and output 100 volt 
rms. This is an 
increase of: 

<ol type = a>

<li> 10 dB 

<li> 20 dB 

<li> 40 dB 

<li> 100 dB 


</ol>
</ol>
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